RECEIVERS FOR LASAR RADARS.
Abstract
Preliminary gain and noise measurements on a 2-1/4 in. ruby laser amplifier indicate a net gain of 5.5 dB and a spontaneous emission of 1.28 photons per signal mode. Preliminary gain measurements on xenon-helium and xenon gas lasers indicate gains up to 62 dB/m. Further work on noise properties and Zeeman tuning are planned. A detailed study of semiconductor photodetectors was made which indicates that the present response times of the devices are limited by fabrication and packaging techniques and that further work on these problem areas should result in high quantum efficiency, rapid response time, wide bandwidth photodetectors, and photomixers for use at any point of the laser frequency spectrum. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 14, 1963
- Accession Number
- AD0424548
Entities
People
- C. Giuliano
- G. S. Picus
- I. J. D'haenens
- W. B. Bridges
Organizations
- HRL Laboratories